Telekinetic Crush (UA)

You create a field of crushing telekinetic force in a 30-foot Cube within range. Each creature in the area makes a Strength saving throw. On a failed save, the target takes 5d6 Force damage and has the Prone condition. On a successful save, the target takes half as much damage only.

Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 3.